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Developers have announced plans to build a new tower in Dubai to surpass the Burj Khalifa, currently the world's tallest building. Emaar Properties has not announced the height of the proposed tower, saying only that it would be a notch taller than the Burj Khalifa's 828m (2,717ft).
Willis tower is the oldest building in the list and the construction of the building completed in 1974. It stands 442 meters or 1,450 feet high and composes 108 floors. Willis Tower is also the longest building that held the longest tallest worldâs record in the list. It held the record for a quarter decade. This tower is also the tallest building in north America.